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Title: A rain duration and modified AMC-dependent SCS-CN procedure for long duration rainfall-runoff events
Authors: Mishra S.K.
Pandey R.P.
Jain M.K.
Singh V.P.
Published in: Water Resources Management
Abstract: This paper presents a rain duration-dependent procedure based on the popular Soil Conservation Service Curve Number (SCS-CN) methodology for computation of direct surface runoff from long duration rains. Curve numbers are derived from long-term daily rainfall-runoff data, and antecedent moisture condition (AMC) related with antecedent duration. Analysis of data from five Indian (large, in terms of area) watersheds reveals the calculated curve numbers to decrease with the considered duration, showing the existence of a characteristic value of minimum CN or maximum initial abstraction to occur in a watershed for a pre-selected AMC. The testing of the proposed procedure on the separate (measured) rainfall-runoff event data sets from the same watersheds suggests satisfactory workability of the method. © Springer Science+Business Media B.V. 2007.
Citation: Water Resources Management (2008), 22(7): 861-876
Issue Date: 2008
Keywords: Antecedent Moisture
Initial abstraction
Rain duration
Rain fall run off
SCS Curve Number
ISSN: 9204741
Author Scopus IDs: 55463271000
Author Affiliations: Mishra, S.K., Department of Water Resources Development and Management, Indian Institute of Technology, Uttaranchal Roorkee-247 667, India
Pandey, R.P., National Institute of Hydrology, Roorkee, UA 247 667, India
Jain, M.K., Department of Hydrology, Indian Institute of Technology, 247667 Roorkee, UA, India
Singh, V.P., Dept. of Biological and Agricultural Engineering, Texas A and M University, Scoates Hall, College Station, TX 77843-2117, United States
Corresponding Author: Jain, M.K.; Department of Hydrology, Indian Institute of Technology, Uttaranchal Roorkee-247 667 UA, India
Appears in Collections:Journal Publications [WR]

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